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Computer Networks Practice Test: OSI Model - Transport Layer
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Avg score: 87% • Most missed: “SYNC flooding attack belongs to a type of security attack known as ___________”
Transport Layer topics include: TCP, UDP, AH and ESP protocols. The transport layer is the fourth layer of the Open Systems Interconnection (OSI) model. It is responsible for ensuring that data packets arrive accurately and reliably between a sender and receiver.  The transport layer provides the following services: End-to-end delivery, Addressing, Reliable delivery, Flow control, Multiplexing, Congestion control.  The transport layer uses TCP or User Datagram Protocol (UDP) most often.  The transport layer's responsibilities include: Multiplexing: Combining multiple data streams into a... Show more
Computer Networks Practice Test: OSI Model - Transport Layer
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25 Questions

1. Bytes of data being transferred in each connection are numbered by TCP. These numbers start with a _________
2. SYNC flooding attack belongs to a type of security attack known as ___________
3. The value of acknowledgement field in a segment defines _______
4. IPsec defines two protocols: _______ and ________
5. Which is the correct expression for the length of UDP datagram?
6. What allows TCP to detect lost segments and in turn recover from that loss?
7. What is the main advantage of UDP?
8. IP Security operates in which layer of the OSI model?
9. The ______ field is used to detect errors over the entire user datagram.
10. Return value of the UDP port “Chargen” is _______
11. In TCP, sending and receiving data is done as _______
12. The receiver of the data controls the amount of data that are to be sent by the sender is referred to as ___________
13. Beyond IP, UDP provides additional services such as _______
14. ESP does not provide ________
15. A client that wishes to connect to an open server tells its TCP that it needs to be connected to that particular server. The process is called ___________
16. In segment header, sequence number and acknowledgement number fields refer to _______
17. TCP process may not write and read data at the same speed. So we need __________ for storage.
18. The port number is “ephemeral port number”, if the source host is _______
19. TCP groups a number of bytes together into a packet called _______
20. Which two types of encryption protocols can be used to secure the authentication of computers using IPsec?
21. The server program tells its TCP that it is ready to accept a connection. This process is called ___________
22. What is the header size of a UDP packet?
23. The sizes of source and destination port address in TCP header are ___________ respectively.
24. Which mode of IPsec should you use to assure the security and confidentiality of data within the same LAN?
25. Size of TCP segment header ranges between ___________

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